Yeah and there are Facebook clones on github. People spin them up all the time but they never gain traction.
Discussion
Probably due to not earning enough trust and people not wanting to switch. See Koo for example, was a new social media during the Twitter debacle, but ended up closed.
You don't have to "trust" my relay. All the notes on it are cryptographically guaranteed to have come from the holder of the nsec they're signed by